Motor-cam for door-locks.



B. E. WESTLIN.

MOTUR GAM POR DOOR LOCKS.

APPLICATION PILU: Nov. 4. 1907.

Patented July 19, 1910.

'80. Y vide improvements in the cam and the con-A UNITED sTATEs PATENT oEEicE.

BIB'OB. E. vWESTIIIIIN, OF ARLINGTON, NEW JERSEY, ASSIGNOR TO OTIS ELEVATOR COM- PANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

d Xeron-cant ron DoonLocKs.

-esteem.

, Be it known that I, Been E. WEBTLIN, a citizen of the United States, residing at Arlington, in the county of Hudson and State of New Jersey, have invented a new and useful Improvement in Motor-Cams for Door-Locks, of 'which the following is a `eciication.

My invention relates to mechanism for controlling the operation of locks for elevator hatchway doors. In elevator systems f it is customary to operate such locks by lmeans of a cam carried by the elevator car.

.This cam is sometimes fixed to the car, and

retract the cam during the movement of the sometimes a motor of some form is used to car, and permit the cam to be returned to operative position only when the car is brought to rest opposite a floor landing. The present invention relates to the latter form of construction in which a cam is oper-- ated by a motor mounted on the elevator One of the features of the present inventien resides' in the improved method of mounting the motor on the elevator car, whereby the motor may be connected for operation to a. cam placed on any corner or a'de of the car.

Another object of the invention is to pronections between it and the car and motor.

Other objects will appear hereinafter, the novel combinations of elements being set forth in the appended claims.

Referring to the drawings, Figure 1 is a.

` plan view; Fig. 2 is a front elevation ofa construction embodying my invention; and Fig.1 3 represents a complete elevator car wit my invention applied thereto.

As here shown, a motor M is swiveled by means of a pivot bolt 1 to a supporting plate 2. This plate 2 is secured to the under side of the channel beams 3 and 4 by means of a late 5 on the upper sideyof the beams, and T1lts 6 extending through the plates 5 and 2.

P. pending anges 7 which engage the inner sides of the channel beams and help to retain the parts securely in position. The lower plate 2 may also be provided with -imilar lianges extending upwardly' between `Speceation of Letters Patent.

Application led November 4, i907.

plate 5 is preferably formed with de-,

Patented July 19, 1910. serial No. sectas.

of the car. This cam device comprises a plate 10 secured to the outer surface of the car, two parallel rock-arms 11, 11, pivoted at 12, 1Q, to the plate 10, and a cam 9 earried by the arms 11, 11, and to which they are pivotally connected at 13. The cani 9 is limited in its downward movement by a stop 14 in the path of an arm 11. A. flexible connection 15, such as a cord or chain, having one end attached at 1G to the cani 9, extends over a direction sheave 17 on the plate 10, from thence upwardly and over a sheave 18 on thc car, and to the sheave 19 to which the other end of said connection is fastened. The sheave 19 is connected to the motor shaft to rotate therewith Then the motor is operated to wind a portion of the cord 15 on the pulley 19 the cam 9 will bc moved upwardly and inwardly to an inoperative position. It will be noted that the point 16 at which the cord 15 is connected to the cam is so located with respect to the direction sheave 1'? that the pull on the cord will tend to move the cam upwardly until the arms 11 are nearly vertical. When the motor pull on the cord is released, the cam 9 will move downwardly, owing to its own weight, aided by thc coil spring 20 connected at its opposite ends to the cam 9 at 2G and plate 10 at 2T, respectively. A compression spring 21 through which the cord 15 extends bears at its lower end against a stop 2 secured to the cord and at its upper end against the sheave frame 18 through which the cord passes. .Vhen the molt-r is energized to wind the cord and more tbc cam 9 upwardly, the spring ll is compressed, but when the motor 4is denergized the pressure of the spring is sullicient to rotate the motor armature back to initial or normal position, at the same time lowering the stop 22 so that the cam 9 will be free to more downwardly as before described.

An important feature of the present invention is the way in which the motor` is mounted, as already described, andwlnch .motor to initial position, :ind menos for repermits of its .djustment so that it m be used with a Can located at any corner'or at an",y point along tlie sides of the ear. 'Beingl swii'eled, it may be rotated to bring its pnl ley in line with any point along the front edge Q5 of the ear. or the side edges. lf the earn is located on the opposite side of tlie car, the. plate Q may readily be reversed so as to project beyond the beam 4, thus placing the motor on the same side of the crossbeanis as tlic cani. The plates 2 and 5 may also be adjusted to any desired position longitudinally of the beams 3, 4.

In operation the motor )I may be energized when current is supplied to the main motor which operates the' elevator car, and denergized when the current is cut from the main motor to bring the car to rest oppostte a floor landing. The cam is there-fore eld in its inopemtive or non-engaging position as the ear moves past the several hatchway doors, and is only moved outwardly to operative or engaging position to unlock a door` when tbe car is stop ed opposite said door. It should be un erstood that any inetfiod of control for the operation of the motor M muy be used, and as this forms no part. of the present invention a controlling system has not been illustrated here.

Obviously various changes in the de' of construction and arrangement of parts might be vmade by those skilled* in the ari without departing from the spirit and scope of my invention, and l desire therefore not to be limited to the exact construction disclosed.

What I claim as new and desire to have protected by Letters Patent of the United States is l. In elevator door lool; apparatus, he combination with a motor mounted in` fixed position, of e motor pulley, acam, and a flexible connection between the cam and pulley.

2. ln elevator door lock apparatus, the combination with an elevator car, of a motor pulley mounted on the elevator car, a support secured to the car, parallel arms pivoted to the support, a cam pivoted to the arms, a direi-.tion slieave carried by said support, and a ilexiole member connected'to the cam, passing over said sheave, and connected to the motor pulley.

3. The combination with a motor, of a cam, und a iexilile operating connection between the motor' and anni permitting n return of the niotor'iifter operation inde- .pendently of the return of the emu to its initial position.

4. The combination wi'tlin mot-or :ind a cam, o1- a flexible operating connection therebetween, i1 device, for returning the turning the cam to initial position after nperation.

5. The combination with a motor and a cam. of an oi'ieratiner cord connected to the inoto, and Cain, and a springg connected to' the cord and operative to return the motor to initial position after operation.

(i. The combination with a motor and a cam` of an operating cord connected to the motor and cam, a spring connected to the cord and operative to return the motor to initial position after operation, and means pulle respeemuse a compression of the'sprng when the 85 motor is operated. l

l S. The combination with a. support, of parallel arms pivoted to the support, a cam carried by the arms, a 'direction siieavo piv oted to the support betweenl the arms, a 5o coi-d connected to the cam and extending diagonally to the sheave,'and meeneem-p nected to the Yord for operating the cam.

. 9. The combination with a support, of u l pair of parallel arms,- each pivoted at one 9h end to the support, u cam pivotally connectA ed to the opposite ends of said arms, a direction slieave journaled on the supoort be-v tween the arias, a cord connected to the cum and engaging the direction sheave, and

means connected to the cord for' operating the cani.

10. The combination with a' suplport, of n pair of parallel arms pivoted to t e su port and normally extendin from in a horizontal irection, a vertical cam pivoted to the outer ends of the arme, a direction sheave on the support and between the arms, a cord connected to me cam and extending inwardly and upwntdly 11 to the sheavc, and means connecte tothe cord for operating the cam.

11. The combination with a vertical su port, of parallel arms extending' nutwardi' from the support and ends on horizontal pivots at the oiposite ends of the support, aicam pivotal y connested to the outer ends of the arms, a l1- rection slieave journaled to the supportsubpivoted at their inner 118 stantially iu line with said pivots, n cord en 120 giiging said slieave and extending diagonally:V downwardly and outwardly therefrom and', connected to the cuni, means connected to outwardly t ereme the cord for moving tlie cam upwardly and inwardly, and a stop to limit the downward 12S movement of the cam.

l2. In elevator door locking apparatus.v the combination with a ear, of a motor swiveled on the frame of the car, a cam, :nid l operating eonneetions between the motor and eam.

1S. la elevator door lock apparatus, the eombination witii a ear, of a motor mounted on thi` ear and adjustable thereon about a vei'tieal axis, a cam, anu operating connections between the motor and cam..

M ln elevator door loelt apparatus, the eombination vcitli a ear, of a ,.iotor mounted on the ear, said motor Coniin'isinf,vr a horizontal shaft and a drive pulley diereon, a direction sheave secured to tbe car, said motor being adjustable to bringl its drive pulley in line with the direction slieave, a ram inovably mounted on the car below said sheare, and a eord or rope connected to the rain and to the motor pulley and passing over said slieave.

t5. ln an elevator. the combination with a ear, of a ar traine comprising horizontal overhead beams. a plate secured to and extending beyond the beams, a motor mounted on the extending portion of the ilate, eam meelianisin eairied b .v the ear lielow the motor` and a tlexible connection between the motor and said mechanism.

li'i. in an elevator, the combination with a ear traine comprising horizontal beams, of a plate secured to tli under side of said beamsl and liavinga portion projet-ting beyond the beams, and a motor mounted on said pi'oiet-tiner portion.

1t. In an elevator, the, combination willi a ear frame, eoiuprising overhead beams parallel to tlie. edge of the ear, of a plate ex tending across the beams and secured theres to, said plate comprising flanges engaging the beams, and a. motor inonnted on the plate.

18. In an elevator, the combination with a ear frame eomprising pa `allel overhead beams with their ander snrfaees in the same horizonte] plane, a plate `extending across tbe beams, means for elampiinr\the plate against said under snraees, sait plate coin'- prisinj?r flanges enffaging the lateral surfaces of the, beams, anda motor mounted on the plate.

19. In an eliwatoiztlie combination with a ear frame comprising parallel overhead beams, of plates loi-ated respectively above and below the beams, bolts extending through tbe plates and set-tiring them in position against tbe beams. the lower plate.

having one end extended beyond the beams,-

aiid a motor mounted upon said extended end.

20. In an elevator,tlie eombination with a ear frame eomprising' parallel overhead beams, of a plate, bolted to the. under siii-fare of the beams and baring one. end extended beyond the beams, and a motor mounted onV said extended portion and adjustable about a vei'lienl axle'. In testimony whereof, l have signed in v name to this speeitieation in the presenee of two subseribing witnesses.

\Vit nesxest M. Zaninsnia, W. ll. Blianr.

sisV 

